/* *  Copyright 2012 The LibYuv Project Authors. All rights reserved. * *  Use of this source code is governed by a BSD-style license *  that can be found in the LICENSE file in the root of the source *  tree. An additional intellectual property rights grant can be found *  in the file PATENTS. All contributing project authors may *  be found in the AUTHORS file in the root of the source tree. */ #include "libyuv/convert_from.h" #include "libyuv/basic_types.h"#include "libyuv/convert.h"  // For I420Copy#include "libyuv/cpu_id.h"#include "libyuv/planar_functions.h"#include "libyuv/rotate.h"#include "libyuv/row.h"#include "libyuv/scale.h"  // For ScalePlane()#include "libyuv/video_common.h" #ifdef __cplusplusnamespace libyuv {extern "C" {#endif #define SUBSAMPLE(v, a, s) (v < 0) ? (-((-v + a) >> s)) : ((v + a) >> s)static __inline int Abs(int v) {  return v >= 0 ? v : -v;} // I420 To any I4xx YUV format with mirroring.static int I420ToI4xx(const uint8_t* src_y,                      int src_stride_y,                      const uint8_t* src_u,                      int src_stride_u,                      const uint8_t* src_v,                      int src_stride_v,                      uint8_t* dst_y,                      int dst_stride_y,                      uint8_t* dst_u,                      int dst_stride_u,                      uint8_t* dst_v,                      int dst_stride_v,                      int src_y_width,                      int src_y_height,                      int dst_uv_width,                      int dst_uv_height) {  const int dst_y_width = Abs(src_y_width);  const int dst_y_height = Abs(src_y_height);  const int src_uv_width = SUBSAMPLE(src_y_width, 1, 1);  const int src_uv_height = SUBSAMPLE(src_y_height, 1, 1);  if (src_y_width == 0 || src_y_height == 0 || dst_uv_width <= 0 ||      dst_uv_height <= 0) {    return -1;  }  if (dst_y) {    ScalePlane(src_y, src_stride_y, src_y_width, src_y_height, dst_y,               dst_stride_y, dst_y_width, dst_y_height, kFilterBilinear);  }  ScalePlane(src_u, src_stride_u, src_uv_width, src_uv_height, dst_u,             dst_stride_u, dst_uv_width, dst_uv_height, kFilterBilinear);  ScalePlane(src_v, src_stride_v, src_uv_width, src_uv_height, dst_v,             dst_stride_v, dst_uv_width, dst_uv_height, kFilterBilinear);  return 0;} // Convert 8 bit YUV to 10 bit.LIBYUV_APIint I420ToI010(const uint8_t* src_y,               int src_stride_y,               const uint8_t* src_u,               int src_stride_u,               const uint8_t* src_v,               int src_stride_v,               uint16_t* dst_y,               int dst_stride_y,               uint16_t* dst_u,               int dst_stride_u,               uint16_t* dst_v,               int dst_stride_v,               int width,               int height) {  int halfwidth = (width + 1) >> 1;  int halfheight = (height + 1) >> 1;  if (!src_u || !src_v || !dst_u || !dst_v || width <= 0 || height == 0) {    return -1;  }  // Negative height means invert the image.  if (height < 0) {    height = -height;    halfheight = (height + 1) >> 1;    src_y = src_y + (height - 1) * src_stride_y;    src_u = src_u + (halfheight - 1) * src_stride_u;    src_v = src_v + (halfheight - 1) * src_stride_v;    src_stride_y = -src_stride_y;    src_stride_u = -src_stride_u;    src_stride_v = -src_stride_v;  }   // Convert Y plane.  Convert8To16Plane(src_y, src_stride_y, dst_y, dst_stride_y, 1024, width,                    height);  // Convert UV planes.  Convert8To16Plane(src_u, src_stride_u, dst_u, dst_stride_u, 1024, halfwidth,                    halfheight);  Convert8To16Plane(src_v, src_stride_v, dst_v, dst_stride_v, 1024, halfwidth,                    halfheight);  return 0;} // 420 chroma is 1/2 width, 1/2 height// 422 chroma is 1/2 width, 1x heightLIBYUV_APIint I420ToI422(const uint8_t* src_y,               int src_stride_y,               const uint8_t* src_u,               int src_stride_u,               const uint8_t* src_v,               int src_stride_v,               uint8_t* dst_y,               int dst_stride_y,               uint8_t* dst_u,               int dst_stride_u,               uint8_t* dst_v,               int dst_stride_v,               int width,               int height) {  const int dst_uv_width = (Abs(width) + 1) >> 1;  const int dst_uv_height = Abs(height);  return I420ToI4xx(src_y, src_stride_y, src_u, src_stride_u, src_v,                    src_stride_v, dst_y, dst_stride_y, dst_u, dst_stride_u,                    dst_v, dst_stride_v, width, height, dst_uv_width,                    dst_uv_height);} // 420 chroma is 1/2 width, 1/2 height// 444 chroma is 1x width, 1x heightLIBYUV_APIint I420ToI444(const uint8_t* src_y,               int src_stride_y,               const uint8_t* src_u,               int src_stride_u,               const uint8_t* src_v,               int src_stride_v,               uint8_t* dst_y,               int dst_stride_y,               uint8_t* dst_u,               int dst_stride_u,               uint8_t* dst_v,               int dst_stride_v,               int width,               int height) {  const int dst_uv_width = Abs(width);  const int dst_uv_height = Abs(height);  return I420ToI4xx(src_y, src_stride_y, src_u, src_stride_u, src_v,                    src_stride_v, dst_y, dst_stride_y, dst_u, dst_stride_u,                    dst_v, dst_stride_v, width, height, dst_uv_width,                    dst_uv_height);} // Copy to I400. Source can be I420,422,444,400,NV12,NV21LIBYUV_APIint I400Copy(const uint8_t* src_y,             int src_stride_y,             uint8_t* dst_y,             int dst_stride_y,             int width,             int height) {  if (!src_y || !dst_y || width <= 0 || height == 0) {    return -1;  }  // Negative height means invert the image.  if (height < 0) {    height = -height;    src_y = src_y + (height - 1) * src_stride_y;    src_stride_y = -src_stride_y;  }  CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height);  return 0;} LIBYUV_APIint I422ToYUY2(const uint8_t* src_y,               int src_stride_y,               const uint8_t* src_u,               int src_stride_u,               const uint8_t* src_v,               int src_stride_v,               uint8_t* dst_yuy2,               int dst_stride_yuy2,               int width,               int height) {  int y;  void (*I422ToYUY2Row)(const uint8_t* src_y, const uint8_t* src_u,                        const uint8_t* src_v, uint8_t* dst_yuy2, int width) =      I422ToYUY2Row_C;  if (!src_y || !src_u || !src_v || !dst_yuy2 || width <= 0 || height == 0) {    return -1;  }  // Negative height means invert the image.  if (height < 0) {    height = -height;    dst_yuy2 = dst_yuy2 + (height - 1) * dst_stride_yuy2;    dst_stride_yuy2 = -dst_stride_yuy2;  }  // Coalesce rows.  if (src_stride_y == width && src_stride_u * 2 == width &&      src_stride_v * 2 == width && dst_stride_yuy2 == width * 2) {    width *= height;    height = 1;    src_stride_y = src_stride_u = src_stride_v = dst_stride_yuy2 = 0;  }#if defined(HAS_I422TOYUY2ROW_SSE2)  if (TestCpuFlag(kCpuHasSSE2)) {    I422ToYUY2Row = I422ToYUY2Row_Any_SSE2;    if (IS_ALIGNED(width, 16)) {      I422ToYUY2Row = I422ToYUY2Row_SSE2;    }  }#endif#if defined(HAS_I422TOYUY2ROW_AVX2)  if (TestCpuFlag(kCpuHasAVX2)) {    I422ToYUY2Row = I422ToYUY2Row_Any_AVX2;    if (IS_ALIGNED(width, 32)) {      I422ToYUY2Row = I422ToYUY2Row_AVX2;    }  }#endif#if defined(HAS_I422TOYUY2ROW_NEON)  if (TestCpuFlag(kCpuHasNEON)) {    I422ToYUY2Row = I422ToYUY2Row_Any_NEON;    if (IS_ALIGNED(width, 16)) {      I422ToYUY2Row = I422ToYUY2Row_NEON;    }  }#endif   for (y = 0; y < height; ++y) {    I422ToYUY2Row(src_y, src_u, src_v, dst_yuy2, width);    src_y += src_stride_y;    src_u += src_stride_u;    src_v += src_stride_v;    dst_yuy2 += dst_stride_yuy2;  }  return 0;} LIBYUV_APIint I420ToYUY2(const uint8_t* src_y,               int src_stride_y,               const uint8_t* src_u,               int src_stride_u,               const uint8_t* src_v,               int src_stride_v,               uint8_t* dst_yuy2,               int dst_stride_yuy2,               int width,               int height) {  int y;  void (*I422ToYUY2Row)(const uint8_t* src_y, const uint8_t* src_u,                        const uint8_t* src_v, uint8_t* dst_yuy2, int width) =      I422ToYUY2Row_C;  if (!src_y || !src_u || !src_v || !dst_yuy2 || width <= 0 || height == 0) {    return -1;  }  // Negative height means invert the image.  if (height < 0) {    height = -height;    dst_yuy2 = dst_yuy2 + (height - 1) * dst_stride_yuy2;    dst_stride_yuy2 = -dst_stride_yuy2;  }#if defined(HAS_I422TOYUY2ROW_SSE2)  if (TestCpuFlag(kCpuHasSSE2)) {    I422ToYUY2Row = I422ToYUY2Row_Any_SSE2;    if (IS_ALIGNED(width, 16)) {      I422ToYUY2Row = I422ToYUY2Row_SSE2;    }  }#endif#if defined(HAS_I422TOYUY2ROW_AVX2)  if (TestCpuFlag(kCpuHasAVX2)) {    I422ToYUY2Row = I422ToYUY2Row_Any_AVX2;    if (IS_ALIGNED(width, 32)) {      I422ToYUY2Row = I422ToYUY2Row_AVX2;    }  }#endif#if defined(HAS_I422TOYUY2ROW_NEON)  if (TestCpuFlag(kCpuHasNEON)) {    I422ToYUY2Row = I422ToYUY2Row_Any_NEON;    if (IS_ALIGNED(width, 16)) {      I422ToYUY2Row = I422ToYUY2Row_NEON;    }  }#endif#if defined(HAS_I422TOYUY2ROW_MSA)  if (TestCpuFlag(kCpuHasMSA)) {    I422ToYUY2Row = I422ToYUY2Row_Any_MSA;    if (IS_ALIGNED(width, 32)) {      I422ToYUY2Row = I422ToYUY2Row_MSA;    }  }#endif   for (y = 0; y < height - 1; y += 2) {    I422ToYUY2Row(src_y, src_u, src_v, dst_yuy2, width);    I422ToYUY2Row(src_y + src_stride_y, src_u, src_v,                  dst_yuy2 + dst_stride_yuy2, width);    src_y += src_stride_y * 2;    src_u += src_stride_u;    src_v += src_stride_v;    dst_yuy2 += dst_stride_yuy2 * 2;  }  if (height & 1) {    I422ToYUY2Row(src_y, src_u, src_v, dst_yuy2, width);  }  return 0;} LIBYUV_APIint I422ToUYVY(const uint8_t* src_y,               int src_stride_y,               const uint8_t* src_u,               int src_stride_u,               const uint8_t* src_v,               int src_stride_v,               uint8_t* dst_uyvy,               int dst_stride_uyvy,               int width,               int height) {  int y;  void (*I422ToUYVYRow)(const uint8_t* src_y, const uint8_t* src_u,                        const uint8_t* src_v, uint8_t* dst_uyvy, int width) =      I422ToUYVYRow_C;  if (!src_y || !src_u || !src_v || !dst_uyvy || width <= 0 || height == 0) {    return -1;  }  // Negative height means invert the image.  if (height < 0) {    height = -height;    dst_uyvy = dst_uyvy + (height - 1) * dst_stride_uyvy;    dst_stride_uyvy = -dst_stride_uyvy;  }  // Coalesce rows.  if (src_stride_y == width && src_stride_u * 2 == width &&      src_stride_v * 2 == width && dst_stride_uyvy == width * 2) {    width *= height;    height = 1;    src_stride_y = src_stride_u = src_stride_v = dst_stride_uyvy = 0;  }#if defined(HAS_I422TOUYVYROW_SSE2)  if (TestCpuFlag(kCpuHasSSE2)) {    I422ToUYVYRow = I422ToUYVYRow_Any_SSE2;    if (IS_ALIGNED(width, 16)) {      I422ToUYVYRow = I422ToUYVYRow_SSE2;    }  }#endif#if defined(HAS_I422TOUYVYROW_AVX2)  if (TestCpuFlag(kCpuHasAVX2)) {    I422ToUYVYRow = I422ToUYVYRow_Any_AVX2;    if (IS_ALIGNED(width, 32)) {      I422ToUYVYRow = I422ToUYVYRow_AVX2;    }  }#endif#if defined(HAS_I422TOUYVYROW_NEON)  if (TestCpuFlag(kCpuHasNEON)) {    I422ToUYVYRow = I422ToUYVYRow_Any_NEON;    if (IS_ALIGNED(width, 16)) {      I422ToUYVYRow = I422ToUYVYRow_NEON;    }  }#endif#if defined(HAS_I422TOUYVYROW_MSA)  if (TestCpuFlag(kCpuHasMSA)) {    I422ToUYVYRow = I422ToUYVYRow_Any_MSA;    if (IS_ALIGNED(width, 32)) {      I422ToUYVYRow = I422ToUYVYRow_MSA;    }  }#endif   for (y = 0; y < height; ++y) {    I422ToUYVYRow(src_y, src_u, src_v, dst_uyvy, width);    src_y += src_stride_y;    src_u += src_stride_u;    src_v += src_stride_v;    dst_uyvy += dst_stride_uyvy;  }  return 0;} LIBYUV_APIint I420ToUYVY(const uint8_t* src_y,               int src_stride_y,               const uint8_t* src_u,               int src_stride_u,               const uint8_t* src_v,               int src_stride_v,               uint8_t* dst_uyvy,               int dst_stride_uyvy,               int width,               int height) {  int y;  void (*I422ToUYVYRow)(const uint8_t* src_y, const uint8_t* src_u,                        const uint8_t* src_v, uint8_t* dst_uyvy, int width) =      I422ToUYVYRow_C;  if (!src_y || !src_u || !src_v || !dst_uyvy || width <= 0 || height == 0) {    return -1;  }  // Negative height means invert the image.  if (height < 0) {    height = -height;    dst_uyvy = dst_uyvy + (height - 1) * dst_stride_uyvy;    dst_stride_uyvy = -dst_stride_uyvy;  }#if defined(HAS_I422TOUYVYROW_SSE2)  if (TestCpuFlag(kCpuHasSSE2)) {    I422ToUYVYRow = I422ToUYVYRow_Any_SSE2;    if (IS_ALIGNED(width, 16)) {      I422ToUYVYRow = I422ToUYVYRow_SSE2;    }  }#endif#if defined(HAS_I422TOUYVYROW_AVX2)  if (TestCpuFlag(kCpuHasAVX2)) {    I422ToUYVYRow = I422ToUYVYRow_Any_AVX2;    if (IS_ALIGNED(width, 32)) {      I422ToUYVYRow = I422ToUYVYRow_AVX2;    }  }#endif#if defined(HAS_I422TOUYVYROW_NEON)  if (TestCpuFlag(kCpuHasNEON)) {    I422ToUYVYRow = I422ToUYVYRow_Any_NEON;    if (IS_ALIGNED(width, 16)) {      I422ToUYVYRow = I422ToUYVYRow_NEON;    }  }#endif#if defined(HAS_I422TOUYVYROW_MSA)  if (TestCpuFlag(kCpuHasMSA)) {    I422ToUYVYRow = I422ToUYVYRow_Any_MSA;    if (IS_ALIGNED(width, 32)) {      I422ToUYVYRow = I422ToUYVYRow_MSA;    }  }#endif   for (y = 0; y < height - 1; y += 2) {    I422ToUYVYRow(src_y, src_u, src_v, dst_uyvy, width);    I422ToUYVYRow(src_y + src_stride_y, src_u, src_v,                  dst_uyvy + dst_stride_uyvy, width);    src_y += src_stride_y * 2;    src_u += src_stride_u;    src_v += src_stride_v;    dst_uyvy += dst_stride_uyvy * 2;  }  if (height & 1) {    I422ToUYVYRow(src_y, src_u, src_v, dst_uyvy, width);  }  return 0;} // TODO(fbarchard): test negative height for invert.LIBYUV_APIint I420ToNV12(const uint8_t* src_y,               int src_stride_y,               const uint8_t* src_u,               int src_stride_u,               const uint8_t* src_v,               int src_stride_v,               uint8_t* dst_y,               int dst_stride_y,               uint8_t* dst_uv,               int dst_stride_uv,               int width,               int height) {  if (!src_y || !src_u || !src_v || !dst_y || !dst_uv || width <= 0 ||      height == 0) {    return -1;  }  int halfwidth = (width + 1) / 2;  int halfheight = height > 0 ? (height + 1) / 2 : (height - 1) / 2;  if (dst_y) {    CopyPlane(src_y, src_stride_y, dst_y, dst_stride_y, width, height);  }  MergeUVPlane(src_u, src_stride_u, src_v, src_stride_v, dst_uv, dst_stride_uv,               halfwidth, halfheight);  return 0;} LIBYUV_APIint I420ToNV21(const uint8_t* src_y,               int src_stride_y,               const uint8_t* src_u,               int src_stride_u,               const uint8_t* src_v,

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